Add @typescript-eslint/no-non-null-assertion-rule

[gomesalexandre]

Overview

... and tackle offenders:

✖ 286 problems (286 errors, 0 warnings)

https://typescript-eslint.io/rules/no-non-null-assertion/

References and additional details

N/A

Acceptance Criteria

N/A

Need By Date

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Screenshots/Mockups

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Estimated effort

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[0xApotheosis]

Yes, yes, a thousand times yes. ! are lazy and unsafe.

...and just so we don't lose this work of art: #8736 (comment)